The Universal String trait | Documentation

rust // more optimal way to take some cstrings as argument fn take_wstr<S: UnivString + ?Sized>(s: &S) { let _ws = s.to_wcstr().unwrap(); // do something with the WideCString... } // call the function take_wstr("test"); let existing_cstr = CString::new("...").unwrap(); take_wstr(&existing_cstr);